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asm-generic/tlb: rename HAVE_MMU_GATHER_NO_GATHER

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Towards a more consistent naming scheme.

Link: http://lkml.kernel.org/r/20200116064531.483522-9-aneesh.kumar@linux.ibm.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra 2020-02-03 17:37:08 -08:00 • committed by Linus Torvalds
parent 3af4bd0337
commit 580a586c40
4 changed files with 19 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

2
arch/Kconfig
View file

@ -402,7 +402,7 @@ config MMU_GATHER_PAGE_SIZE
config MMU_GATHER_NO_RANGE config MMU_GATHER_NO_RANGE
bool bool
config HAVE_MMU_GATHER_NO_GATHER config MMU_GATHER_NO_GATHER
bool bool
config ARCH_HAVE_NMI_SAFE_CMPXCHG config ARCH_HAVE_NMI_SAFE_CMPXCHG

2
arch/s390/Kconfig
View file

@ -163,7 +163,7 @@ config S390
select HAVE_PERF_USER_STACK_DUMP select HAVE_PERF_USER_STACK_DUMP
select HAVE_MEMBLOCK_NODE_MAP select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MEMBLOCK_PHYS_MAP select HAVE_MEMBLOCK_PHYS_MAP
select HAVE_MMU_GATHER_NO_GATHER select MMU_GATHER_NO_GATHER
select HAVE_MOD_ARCH_SPECIFIC select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NOP_MCOUNT select HAVE_NOP_MCOUNT
select HAVE_OPROFILE select HAVE_OPROFILE

14
include/asm-generic/tlb.h
View file

@ -143,6 +143,16 @@
* MMU_GATHER_NO_RANGE * MMU_GATHER_NO_RANGE
* *
* Use this if your architecture lacks an efficient flush_tlb_range(). * Use this if your architecture lacks an efficient flush_tlb_range().
*
* MMU_GATHER_NO_GATHER
*
* If the option is set the mmu_gather will not track individual pages for
* delayed page free anymore. A platform that enables the option needs to
* provide its own implementation of the __tlb_remove_page_size() function to
* free pages.
*
* This is useful if your architecture already flushes TLB entries in the
* various ptep_get_and_clear() functions.
*/ */
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE #ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
@ -202,7 +212,7 @@ extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
#endif /* CONFIG_MMU_GATHER_RCU_TABLE_FREE */ #endif /* CONFIG_MMU_GATHER_RCU_TABLE_FREE */
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
/* /*
* If we can't allocate a page to make a big batch of page pointers * If we can't allocate a page to make a big batch of page pointers
* to work on, then just handle a few from the on-stack structure. * to work on, then just handle a few from the on-stack structure.
@ -277,7 +287,7 @@ struct mmu_gather {
unsigned int batch_count; unsigned int batch_count;
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
struct mmu_gather_batch *active; struct mmu_gather_batch *active;
struct mmu_gather_batch local; struct mmu_gather_batch local;
struct page *__pages[MMU_GATHER_BUNDLE]; struct page *__pages[MMU_GATHER_BUNDLE];

10
mm/mmu_gather.c
View file

@ -11,7 +11,7 @@
#include <asm/pgalloc.h> #include <asm/pgalloc.h>
#include <asm/tlb.h> #include <asm/tlb.h>
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
static bool tlb_next_batch(struct mmu_gather *tlb) static bool tlb_next_batch(struct mmu_gather *tlb)
{ {
@ -89,7 +89,7 @@ bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_
return false; return false;
} }
#endif /* HAVE_MMU_GATHER_NO_GATHER */ #endif /* MMU_GATHER_NO_GATHER */
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE #ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
@ -180,7 +180,7 @@ static void tlb_flush_mmu_free(struct mmu_gather *tlb)
#ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE #ifdef CONFIG_MMU_GATHER_RCU_TABLE_FREE
tlb_table_flush(tlb); tlb_table_flush(tlb);
#endif #endif
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
tlb_batch_pages_flush(tlb); tlb_batch_pages_flush(tlb);
#endif #endif
} }
@ -211,7 +211,7 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm,
/* Is it from 0 to ~0? */ /* Is it from 0 to ~0? */
tlb->fullmm = !(start | (end+1)); tlb->fullmm = !(start | (end+1));
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
tlb->need_flush_all = 0; tlb->need_flush_all = 0;
tlb->local.next = NULL; tlb->local.next = NULL;
tlb->local.nr = 0; tlb->local.nr = 0;
@ -271,7 +271,7 @@ void tlb_finish_mmu(struct mmu_gather *tlb,
tlb_flush_mmu(tlb); tlb_flush_mmu(tlb);
#ifndef CONFIG_HAVE_MMU_GATHER_NO_GATHER #ifndef CONFIG_MMU_GATHER_NO_GATHER
tlb_batch_list_free(tlb); tlb_batch_list_free(tlb);
#endif #endif
dec_tlb_flush_pending(tlb->mm); dec_tlb_flush_pending(tlb->mm);